超额收益标准差是什么

页面:/news/view-2478048/ | 耗时:0.5627 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=2478048 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2478048 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2478048 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1871809,2588443,1115039,2820038,649550,3210861,532615,3512013,847822,579369,535518,787784,3272600,1084430,471541,541172,3096855,656153,1180304,1116264,1930301,1021549,2501369,1105048,421121,556697,3294898,525175,1758661,471049) ORDER BY field (ArticleID,1871809,2588443,1115039,2820038,649550,3210861,532615,3512013,847822,579369,535518,787784,3272600,1084430,471541,541172,3096855,656153,1180304,1116264,1930301,1021549,2501369,1105048,421121,556697,3294898,525175,1758661,471049)